diff --git a/tests/test_body_part.py b/tests/test_body_part.py
index 7ed6238..1d8c0d9 100644
--- a/tests/test_body_part.py
+++ b/tests/test_body_part.py
@@ -134,4 +134,20 @@ def test_is_contained(sample_body_part_index: BodyPartIndex):
     body_part3 = sample_body_part_index.get_by_id(RIGHT_UTERINE_ADNEXA_ID)
 
     assert body_part1.is_contained(body_part2) == True
-    assert body_part1.is_contained(body_part3) == False
\ No newline at end of file
+    assert body_part1.is_contained(body_part3) == False
+
+# returns empty array when no children
+
+# returns empty array when no contained ancestors
+
+# returns empty array when no contained ancestors
+
+# returns the correct result (has valid ancestor with radlexId
+
+# returns the correct result (has valid ancestor with BodyPart)
+
+# returns the correct result (no valid ancestor)
+
+# BodyPart with partOf children
+
+# BodyPart with partOf ancestors
\ No newline at end of file
diff --git a/tests/test_main.py b/tests/test_main.py
new file mode 100644
index 0000000..65ed0eb
--- /dev/null
+++ b/tests/test_main.py
@@ -0,0 +1,4 @@
+# pylint: disable=missing-module-docstring
+import pytest
+
+# returns the correct library version
\ No newline at end of file